Lug nuts

[Minisprint]

would anyone know the torque for the lug nuts on a 2003 W22 chassis

thanks in advance George

[edgray]

475 lbs ft

[Carvin Marvin]

I think you will find the torque stamped on the nut washers.

[EngineerMike]

A good rule of thumb is 19.5" wheels- 175#' in two steps, 120-140 all around, then up to 175 all around. 22.5"- 475#' in two, 300-350 all around then up to 475.
A better one is the factory spec if you can verify it.

[DAN L]

Quote:

Originally Posted by EngineerMike A good rule of thumb is 19.5" wheels- 175#' in two steps, 120-140 all around, then up to 175 all around. 22.5"- 475#' in two, 300-350 all around then up to 475. A better one is the factory spec if you can verify it.

i have the w20 chassis with 19.5 wheels, 475 ft lbs torque required. that is why i checked your data. it is always better to cross torque in steps.

on page 33 of my WORKHORSE GAS MOTORHOME CHASSIS GUIDE, july 2006 edition, it states that the wheel lug nut torque for wheels on w20, w22, and w24 with 33mm lug nuts require 475 ft lbs torque.
the stud size is 22mm and there are 8 of them. these wheels have 5000 lb capacity.

on w16 and w18 with 27mm lug nuts the torque is 150 ft lbs. the stud size is 5/8" and there are 10 studs. these wheels have 3750 lb capacity.

the p series with 8ea 9/16 studs and 1" lug nuts require 140 ft lbs torque.

the p series with 10ea 5/8 studs and 1" lug nuts require 175 ft lbs torque.
only five studs are used on the front axle.

on the p series, there are changes in wheel capacity with model years, wide track or not.

whew!!!

[FDchief]

Yes, the torque specs of 475 ft. lbs is correct. But get ready to enjoy the smirks you will get from different shops when you take it to them to have the brakes checks, tires changed or putting on your new aluminum wheels. Most of the time, they do not have a torque wrench / multiplier to check the torque. They will just use their large impact gun and call it good.

I know that everyone will tell you find another shop, but trust me, I have yet to have one tell me "sure, I know the torque is 475#'s and I have the equipment to torque it to that". Even my WH service center. I have used Les Schwab for years who has lots of experience with big rigs, then choose to worry about other things.

[EngineerMike]

Dan- I was showing my age. I haven't looked @ 19.5's closely since I sold my P30 w/the 10ea 5/8 studs, which all the 19.5's I knew carried (even the heavy PU rigs on the Union Pacific). Good post, so I copied it to my PDA. Thanks.

[DAN L]

Quote:

Originally Posted by FDchief Yes, the torque specs of 475 ft. lbs is correct. But get ready to enjoy the smirks you will get from different shops when you take it to them to have the brakes checks, tires changed or putting on your new aluminum wheels. Most of the time, they do not have a torque wrench / multiplier to check the torque. They will just use their large impact gun and call it good. I know that everyone will tell you find another shop, but trust me, I have yet to have one tell me "sure, I know the torque is 475#'s and I have the equipment to torque it to that". Even my WH service center. I have used Les Schwab for years who has lots of experience with big rigs, then choose to worry about other things.

i will loan them my torque wrench and even set it for them.

[Dmiles]

Quote:

Originally Posted by FDchief Yes, the torque specs of 475 ft. lbs is correct. But get ready to enjoy the smirks you will get from different shops when you take it to them to have the brakes checks, tires changed or putting on your new aluminum wheels. Most of the time, they do not have a torque wrench / multiplier to check the torque. They will just use their large impact gun and call it good. I know that everyone will tell you find another shop, but trust me, I have yet to have one tell me "sure, I know the torque is 475#'s and I have the equipment to torque it to that". Even my WH service center. I have used Les Schwab for years who has lots of experience with big rigs, then choose to worry about other things.

That is exactly what I have found. Even the best mechanic I know will throw them on there with his 1/2 impact wrench, and really doesn't want to hear it when you bring up torque specs for wheels.

[Dmiles]

By the way...anyone ever try to break lose a lug nut that's been torqued to 475 ft. lbs. with a lug wrench? Even with a cheater, I'm thinking it's near impossible. I carry a 6 gallon pancake compressor, but it doesn't deliver enough cfm at 90 psi for a 1/2 inch impact wrench.

I'm just wondering what everyone else does...I'd like to be able to at least change a front tire on the road if the need arises.

[FDchief]

I have emergency road service

[edgray]

Quote:

Originally Posted by Dmiles By the way...anyone ever try to break lose a lug nut that's been torqued to 475 ft. lbs. with a lug wrench? ............... I'm just wondering what everyone else does...I'd like to be able to at least change a front tire on the road if the need arises.

Torque multipliers and bottle jacks have been repeatedly talked about in previous threads. do a search and you'll find lots to read.

I carry an UNMOUNTED spare tire ONLY. I assume I'll need a tire man to break the lugs, dismount the old and mount the new, but at least I won't have to buy a tire at roadside prices. I have a compartment that accomodates the tire, but won't handle it mounted on a rim.
ED

[EngineerMike]

We don't have emergency road service when traveling in Mexico; if it exists is an open question. So I carry a 4x torque multiplier, 30" x 1-1/8" rebar for a reaction leg (extends the torque multiplier's handle to push against the ground), 3/4" x 8" extension, socket & long handled 1/2" ratchet for removal, and substitute a long handled 1/2" torque wrench for reinstalling.

I have never had to use this setup for real, but I practiced it on a couple of lug bolts to see that it works. Takes a good pull on the 1/2" ratchet to break nuts free but it works. The multiplier nets out at 3.33x after friction, so about 73# pull on a 2' handle x 3.33 ~ 475#-ft. Very manageable for an aging shrimp like me. Then I'll hafta haul the tire to a repair place, which in Baja is about every 50 miles on the highway, and every 500 feet in town. In the USA I have road service.

[Dmiles]

Quote:

Originally Posted by EngineerMike We don't have emergency road service when traveling in Mexico; if it exists is an open question. So I carry a 4x torque multiplier, 30" x 1-1/8" rebar for a reaction leg (extends the torque multiplier's handle to push against the ground), 3/4" x 8" extension, socket & long handled 1/2" ratchet for removal, and substitute a long handled 1/2" torque wrench for reinstalling. I have never had to use this setup for real, but I practiced it on a couple of lug bolts to see that it works. Takes a good pull on the 1/2" ratchet to break nuts free but it works. The multiplier nets out at 3.33x after friction, so about 73# pull on a 2' handle x 3.33 ~ 475#-ft. Very manageable for an aging shrimp like me. Then I'll hafta haul the tire to a repair place, which in Baja is about every 50 miles on the highway, and every 500 feet in town. In the USA I have road service.

Thanks Mike, as per usual in posts of yours that I have read, you pretty well covered it. I have emergency road service and plan on keeping it, I guess I just like knowing I can if I have to. Belt and suspenders type of thing.